I have to switch the computer of at the mains. When i came to switch it back on i get an error bootmgr is missing, so i put the windows 7 dvd in drive and windows starts.
I have three hard drives two internal and 1 external, what the pc is doing is looking on the HDD that does not have Windows on (J = Disk 0) but windows is on (C = Disk 1).
How can i change these around so that i do not need the DVD in the drive all the time.
I think i can use Disk Management, but i have forget how to do this